TECH CRUNCH - Jan 9 - According to a new report from the Pew Research Center, the social network remains the most popular, but its membership levels have seen little change from where they were in 2013. One exception to this is with the “older” adults demographic. For the first time, more than half (56%) of internet users ages 65 and older use Facebook. While Facebook still dominates, more Americans are expanding their activities to other social media properties. Now, 52% of the online population uses two or more social media sites, up from 42% in 2013.